Use tabulated electrode potentials to calculate ΔG∘ for the reaction. 2K(s)+2H2O(l)→H2(g)+2OH−(aq)+2K+(aq) Express your answer to three...

Use tabulated electrode potentials to calculate ΔG∘ for the reaction. 2K(s)+2H2O(l)→H2(g)+2OH−(aq)+2K+(aq) Express your answer to three significant figures and include the appropriate units. ΔG∘ = nothing nothing Request Answer Part B Is the reaction spontaneous? Is the reaction spontaneous? no yes

Solutions

Expert Solution

2K(s) -----------> 2K^+ (aq) + 2e^- E0 = 2.92v

2H2O(l) +2e^- ------> H2(g) + 2OH^- (aq) E0 = -0.83v

--------------------------------------------------------------------------------

2K(s) + 2H2O(l) ------> 2K^+ (aq) + H2(g) + 2OH^- (aq) E0cell = 2.09v

n = 2

ΔG∘ = -nE0cell *F

= -2*2.09*96500

= -403370J = -403.37KJ

part-B

ΔG∘ <0 it is spontaneous reaction

Is the reaction spontaneous yes

queen_honey_blossom answered 1 year ago

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